Inventories (Tables)

12 Months Ended

Dec. 31, 2025

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consist of the following:

(In thousands)	December 31 2025		December 31 2024
Finished goods	$	11,057	$	14,344
Work-in-process	13,679		15,629
Raw materials and purchased parts	107,056		108,381
Stores and supplies	48,756		44,705
Total inventories	$	180,548	$	183,059
Valued at lower of cost or market:
LIFO basis	$	92,939	$	96,680
FIFO basis	22,306		19,761
Average cost basis	65,303		66,618
Total inventories	$	180,548	$	183,059